MySQL Cluster NDB 6.1 no longer in development.
MySQL Cluster NDB 6.1 (formerly known as “MySQL Cluster
Carrier Grade Edition 6.1.x”) is no longer being
developed or maintained; if you are using a MySQL Cluster NDB
6.1 release, you should upgrade to the latest version of MySQL
Cluster, which is available from
http://dev.mysql.com/downloads/cluster/ .

This Beta release incorporates all bugfixes and changes made in
previous MySQL Cluster releases, as well as all bugfixes and
feature changes which were added in mainline MySQL 5.1 through
MySQL 5.1.15 (see Changes in MySQL 5.1.15 (2007-01-25)).

Note

Please refer to our bug database at
http://bugs.mysql.com/ for more details about
the individual bugs fixed in this version.

Bugs Fixed

Using node IDs greater than 48 could sometimes lead to incorrect
memory access and a subsequent forced shutdown of the cluster.
(Bug #26267)